Heterozygous males have a reduced number of sex comb teeth on the first leg. Heterozygous males have an average of 0.03 ectopic sex comb teeth per second leg. Heterozygous males have no ectopic sex comb teeth on the third legs. ScrT1/Scr4 ; Dp(3;Y)77ab males have no ectopic sex comb teeth on the second or third legs.
Dominant allele.
Extra sex combs present an all six legs of males.
Tiong.